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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-03-27 00:39:56 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-11 20:18:45 +0100 |
| commit | 42dad95d2ae5a8dbf12a971eee649486a1e71ba6 (patch) | |
| tree | ef09932f08c60a9a6dbc5bb5a7626b3cd4c808ed | |
| parent | c3f1cd8869c37f0f841c668ddf48090101c79181 (diff) | |
| download | ffmpeg-42dad95d2ae5a8dbf12a971eee649486a1e71ba6.tar.gz | |
avcodec/truemotion2: Fix integer overflow in tm2_decode_blocks()
Fixes: signed integer overflow: 255 + 2147483634 cannot be represented in type 'int'
Fixes: 13472/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5712444142387200
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0ad0533e914a2618aea1dc77748037bd8459f61d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/truemotion2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index bc3f16827c..691a05a696 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -824,7 +824,7 @@ static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p) dst = p->data[0]; for (j = 0; j < h; j++) { for (i = 0; i < w; i++) { - int y = Y[i], u = U[i >> 1], v = V[i >> 1]; + unsigned y = Y[i], u = U[i >> 1], v = V[i >> 1]; dst[3*i+0] = av_clip_uint8(y + v); dst[3*i+1] = av_clip_uint8(y); dst[3*i+2] = av_clip_uint8(y + u); |